ASoC: sun8i-codec: Fix field bit number indentation

Several fields have inconsistent indentation, presumably because the
patch "looked correct" due to the additional "+" character at the
beginning of the line.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20200831034852.18841-7-samuel@sholland.orgSigned-off-by: Mark Brown <broonie@kernel.org>